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Varun sir explains What is Firewalls and How it Works is described in this video.

A Firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies.

Firewalls(Network Security)
1) Monitors and controls Incoming and outgoing traffic based on predefined rules.
2) Acts like a barrier.
3) Host based and Network based firewall.

0:00 – Firewall
5:05 – Packet Filtering Firewall

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Other subject-wise playlist Links:
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►Design and Analysis of algorithms (DAA):
https://www.youtube.com/playlist?list=PLxCzCOWd7aiHcmS4i14bI0VrMbZTUvlTa
►Database Management System:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiFAN6I8CuViBuCdJgiOkT2Y
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https://www.youtube.com/playlist?list=PLxCzCOWd7aiFM9Lj5G9G_76adtyb4ef7i
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https://www.youtube.com/playlist?list=PLxCzCOWd7aiHGhOHV-nwb0HR5US5GFKFI
►Computer Architecture:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiHMonh3G6QNKq53C6oNXGrX
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https://www.youtube.com/playlist?list=PLxCzCOWd7aiGz9donHRrE9I3Mwn6XdP8p
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https://www.youtube.com/playlist?list=PLxCzCOWd7aiHqU4HKL7-SITyuSIcD93id
►Discrete Mathematics:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiH2wwES9vPWsEL6ipTaUSl3
►Compiler Design:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiEKtKSIHYusizkESC42diyc
►Number System:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiFOet6KEEqDff1aXEGLdUzn
►Cloud Computing & BIG Data:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiHRHVUtR-O52MsrdUSrzuy4
►Software Engineering:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiEed7SKZBnC6ypFDWYLRvB2
►Data Structure:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiEwaANNt3OqJPVIxwp2ebiT
►Graph Theory:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiG0M5FqjyoqB20Edk0tyzVt
►Programming in C:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiGmiGl_DOuRMJYG8tOVuapB
►Digital Logic:
https://www.youtube.com/playlist?list=PLxCzCOWd7aiGmXg4NoX6R31AsC5LeCPHe

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#Firewalls#NetworkSecurity

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